backup camera

Hey there! I have a 2012 Avalanche… keep having issues with wires breaking around the tailgate which makes the backup camera not work. Anyone else have this issue? Any suggestions on what to do to prevent it?

OK here goes, I went to install a new back up camera because our avalanches have huge Blindspot‘s when you’re going in reverse.. Mass of splicing and soldering but I did get the new deck to work. However now my back up lights don’t work my dome light is out and my transmission is acting like it...

7” Sony head unit w/ backup camera